Adjustable casing for lamp-sockets.



E. H. FREEMAN. ADJUSTABLE mama FOR LAMP sooxms.

APPLXGAIjIbN FILED JULY 15, 1908. I

Patented July 6, 1909.

UNITED STATES PATENT OFFICE.

EDGAR H. FREEM AN, OFWTRENTQN, New JERSEY,

am ss-mam: CASING iron mur socn rs.

i No. 927,344.

. and more articularly to an im roved snap casing or s iell for the sockets of amps of this character.

The invention has for its object the production of a casing or shell rovided' with improved means for detacha ly and ad'ustabl uniting the ca with the body 'thereoi in suc manner that t 1e slot, through which the circlaims.

.cui-t controllin key protrudes, may be prop-, erly positione to make said key readily and conveniently accessible I irrespective of the location of the socket casing with relation to its support.

A further object is to provide the bodyof the shell or casing with a plurality of positioning slots and a single locking hole and to provide the cap with uniform locking means ada ted to engage either of said slots.

1e invention will be hereinafter fully set forth and particularly pointed out in the In the accompanying drawings Figure 1 is a side elevation illustrating my improved socket casing incasing therein an ordinary lamp socket. Fig. 2 is a transverse sectional view on line 22, of Fig. 1, omittin the socket. Fig. 3 is a perspective view wit the ca and body separated. I

ike characters of reference designate cor res onding parts.

l eferring to the drawings, 10 designates the body of my improved casing, the same being of any suitable contour and usually provided with the ordinary longitudinal slot 11 for the accommodation of the-'lamp key 12. In order. to render the Wall of the casing 10 freely resilient adjacent the slot 11, the

'metal may be slit as indicated at 13.

7 One edge portion of the body 10 is pro vided with a lurality of bayonet slots 14 and with a single ocking hole 15, the latter being e uidistant from transverse portions of the a( jacent bayonet slots and edge of slot 11 contiguous to the locking hole 15 and constituting atongue or lip that is preferably bent slightly inward as indicated at 16.

Specification 0! Letters Patent.

Application 1908. Serial No.

-ner that is named July 6,1909.

The cap 17 .is provided with a flange 18 constructed to fit over one endof the body 10 and is provided with a plurality of inwardly extended equidistant lugs 19 corresponding in number and position to the bayonet slots 14 and hole 15, combined.

In practice the cap 17" is secured to. a bracket or other support in the usual manner, and the casing 10, carrying the usual 'socket and plug, secured thereto. In order to attach the body 10 to the cap 17 the bent portion 16 and the longitudinally disposed portions of the bayonet slots 14 are brought opposite the lugs 19 and the said body pushed into the cap. The body is then turned slightly to the right to bring the lugs '19 into the horizontal portions of slots 14, whereupon the lu 19 that passes over the .bent portion 16 Wi I ride thereover, and snap into. the lockinghole 15, thus firmly locking the parts together. With this construction therefore, it will be evident that when certain of thelugs 19 are in position to enter the bayonet slots, the other lug will be positioned over the inwardly bent tongue or lip 16. Therefore the body can be pushed into the cap without interference until the lugs 19 are in line with the transverse ortions of the bayonet slots, inasmuch as t 1e said lug will slip over the tongue or lip. Apart turn will carry the three logs into said'transverse portions of the bayonet slots While the fourth lug will be simultaneously moved into the opening 15. The inturned tongue or lip therefore is an important feature, and its particular location, being formed by the corroduced by the slot .11. The

particular re ation of the parts therefore is such that there has to be no careful adjustment of the cap to the body. It can be ap- I plied indiscriminately and rotated, for just as soon as three of the lugs aline with the bayonet slots, the fourth comes over the tongue and the two members slip into interlocking relation and they cannot incorrectly interlock, for the lugs that. engage in the bayonet slots prevent the remaining lug from sli ing into the key-receiving slot.

li hen it is desired to separate the body from the cap, the Wall adjacent the locking hole 15 is pressed in, whereupon the bod 10 may be turned to the left to disengage u 19 from said hole and the slots 14, the bent portion 16 serving to minimize the resistance. Should the key 12 not come into a convenient or accessible position when the cap and a shell.

increasing or diminishing the number of bay-,

onet slots 14,'so long asthe hole is equally spaced therefrom, the number of lugs 19'being also correspondingly varied.

; As above pointed out,-one of the important features of the invention resides in the inturned tongue or lip 16 in combination with the single locking hole 15 and a plurelityof.

1 locking lugs '19. 'As'shown, these locking tioned.

lugs are all of the same size and shepeend are ofsuch :1 tonnes to present abrupt shoulders on opFosit-e sides, thus providing for se curely 100K ing the cap against turning in either direction after having been once posi- These abrupt shouldered" locking lugs 19 glide over the lip 16 when the carpis placed over the shell.

'CleimsP v 1. Ace-sing for incandescent lamps coniprising a body pro'videdwith e illurelity of l positioning slots opening throu one end, end a single locking hole, an edge port on of the foodvml enentseid hole being benttoforni eyieldin lip ortongue, and a cap provided Withe urelity of equidistant lugs having abrupt lb and each arranged to engage in any of said simultaneously entering the positioning slots and passing over the lip or tonguenito the hole.

2. A casing; for incandescent lempsyconv v grising a body provided with e plurelity of yonet slots and e key-receiving slot epening through one end, and a single hole admsent said end. and said key-receiving slot, the

corner of said bodyiornied by said end and ckingshoulders on opposite sides;

positioning slots or in said hole, and said lugs key slot contiguous to said hole being bent inwardly forming a yielding tongue or lip, and cap. provided with e flange con- 'structed to fit over the slotted end of said body, said cap being provided with a pluralityofinwardly extending lugs ,hav1ng abrupt locking shoulders on OPPOSIEG sides end each arranged to engage in any one of .seidbeyonet slotsor 1n said hole, and said lugs simultaneously entering the bayonet slots and passing over the tongue or lip to a.

position to engage in the hole,

g In testimony whereof I hereunto eflix my signature in the iesence of two Witnesses.

-Witnesses: u v

ADELAIDE HENRY, firms. Ptonm'owrrei. 

